I want to build a simple two wheeled robot witha few sharp distance sensors for collision avoidanceand some LCD for robot status output. In the futureI'm planning to add Bluetooth support.I want to know what is the most suitable micro-controllerfor my purpose: Axon, Axon II, or Axon Mote?

I see that Axon II is the most expensive micro-controller.So I'm guessing it is the best there is and I can afford itbut will it suit my purpose?

Axon Mote also looks nice but it works on 3.3 voltsand I can't understand how it can operate 5V servos.